Oxygen delivery system



FIG. 1 is a side perspective view of the oxygen delivery system;

FIG. 2 is an elevation view from the front.

FIG. 3 is an elevation view from the rear.

FIG. 4 is a plan view from above.

FIG. 5 is a plan view from below.

FIG. 6 is a plan view from one side; and,

FIG. 7 is a plan view from the other side. 

The ornamental design for an oxygen delivery system, as shown and described. 